But here are a few thoughts: Multi-pip spells: Maybe take a hard look at Hugs, Grisly Guardian, Etali, Primal Conqueror, and Tlincalli Hunter, just bc multi-pips are always difficult to cast
When this creature becomes buffed enough with other instants, sorceries, artifact equipment, or enchantments, you can eventually cast Fight to destroy the problem creature before it has a chance to attack you again
Pillow fort decks are more about staying passive and focusing on defense
Cross-promotion anyone
By paying one generic and one Red mana, you can reveal at random one of those cards and have Volatile Chimera become a copy of that card (retaining this ability as well)
You could also pair this with cards like Curse of Opulence to make attacking specific players even more appealing